There are several ways. It all depends on what kind of accuracy is needed. Today's steppers are much better than they used to be. You can also add an optical shaft encoder, or you can go old school and check out synchro-resolvers. It's been a very long time (1996ish) since I've done anything with synchro-resolvers, but I know there's still analog gear out there that uses them.<div>
<br></div><div>Joe<br><br><div class="gmail_quote">On Sat, Mar 2, 2013 at 6:54 PM, Stephen Kraus <span dir="ltr"><<a href="mailto:ub3ratl4sf00@gmail.com" target="_blank">ub3ratl4sf00@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Stepper motor and some sort of optical sensor.<br><br><div class="gmail_quote">On Sat, Mar 2, 2013 at 6:52 PM, James Nylen <span dir="ltr"><<a href="mailto:jnylen@gmail.com" target="_blank">jnylen@gmail.com</a>></span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">For a future electronics project, I want to make a seasonal clock like this one : <a href="http://www.kickstarter.com/projects/scottthrift/the-present" target="_blank">http://www.kickstarter.com/projects/scottthrift/the-present</a> . What is the best way for a hobbyist like me to make a motor rotate precisely to a given angle? I assume I need some kind of rotation sensor? I'd like to get within 1-2 degrees accuracy if possible.
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